You have more suspension work than I do. But I wonder how mine compares in bumpy roads to yours, since you have pro kit springs and I've got coilovers (375# front, 250# rear). It definitely sucks on bumpy roads that's for sure. Still trying to find a way to get my Torque Arm to not bump my exhaust all the time on bumpy roads, that annoys me the most.

Bullitts are better than Bullets

I don't have the rates for the prokit springs, so I can't compare, but they are progressive which is why I always buy Eibach for my street rides.
I am still on the stock 80,000 mile shocks so a lot of the bump and grind is from lack of dampening. It will be interesting to see how it behaves with proper valving.
I have Koni adjustables on order so stay tuned on that one.